Gas pressure regulator



Dec. 15, 193ml. J. F. voN s cHtJ-rzV 1,837,086

GAS PRESSURE REGULATOR l Fned'Feb. 19, 1929 l Y 'd y a Patented Dec. 155i 193,1, l

UNITED STATES JOHANN rmnnnrcn von soiurz,` or BERLIN, GERMANY GAS PRESSURE REGULATOR Application illed February 19, 1929, Serial No. 341,197, and in Germany October 28, 1927.

This invention relates to a gas pressure regulator, more particularly for use 1n living rooms, having a control pressure regulator.

Gas pressure regulators of the diaphragm 5 type which are fitted in living rooms require special guard means to counteract the .danger of the diaphragm assumin in the course 'of time tendency to leakage. Tn many cases the space abovethe diaphragm, which space rel@ quirestobein communication with the atmosphere, is furnished with a special deaereation ppe leading to a discharge passage or the li e. ble with this pipe in apartments etc. matures 1.5 into the idea of leaving the space in'question in communication with the atmospheric air,

i. e. that contained in the room etc., and to employ as safety' means a diaphragm having particular resistive capabilities, this diaphragm preferably being composed of sheet metal which does not rust. 1

Diaphragms of this type perform only a veryr small stroke, which in itself would not be sufficient to actuate the regulating valve.

The invention as described in the following permits, however, the regulator to be entirely closed oli` against the atmosphere, a metal idiaphragm being mounted on a control re lator, the branch .current pf which in tiillil/e .to manner known per se is returned intothe consumption pipe and controls a working diaphragm of the regulator valve situated in the gas space. The series connection of'a a effected in order toincrease the sensitiveness is accordingly in this case also performed as a guard means. B reason of the small stroke of the metal diap ragm the possibility is ht the same time created 01E-makingl the connection aperture between cover chamber and'atmosphere particularly small, as only very little air is required to pass in` and/out qpon the operation of the diaphragm. This o ers advanta es because even should the, dia- Vphragm e damaged the amount of gas passing .out of the y as to remain without detrimental effect. The control regulator may be mounted above the ,Y main regulator withln the same casing. In such an arrangement there is, for example, lthe possibility, of maintainin The desire to dispense as far as possi-l the control regulator is fitted on the control regulator knownper se and otherwise cover space \Will be so ysmall` by 3 means ofthe control regulator, the auxiliary i pressure acting on the workingdiaphragm at a constant level, viz., at such an amount thatthe same is somewhat higher than the consumption pressure. The control regulator is accordingly required to regulate a branch current to this control pressure, which is to be adjusted with the assistance of the load on the control diaphragm. The working diaphragm is loaded by means of weights to such extent that the same is maintained in balance 'by the control pressure which, in the particular embodiment shown, acts from below:S The working 'diaphragm 65 is then controlled by the consumption pressure in similar manner to theV diaphragm of an ordinary regulator, as merely the like- Wise invariable controll pressure -takes the place of atmospheric pressure.

The invention will -now be described more fully` with reference to the accompanying drawing,`in which:

The figure is a longitudinal crosssection of the gas pressure regulator and control regula-l tor. This figure shows by way ofexample a regulator of the kind in question, in which casing The gas introduced et 1 passes through the main valve 2 into the chamber 3\and to the dis-4 charge socket 4. The mainv valve 2 communicates with the working diaphragm. 5. The space 6 below the working diaphragm 5 S5 communicates by means of the pipe 7 with the Aseparate space 18 below the metallic diaphragm 10 of the controlregulator. The

of the main re ulator. through the soc control regulator receives the gas under preliminary pressurel through the pipe 8. In order toV obtain the easiestpossible movability of the control regulator valve, this valve i is not in .fixed connection with the diaphragm l10 but is pressed against the same by means of a spring 11. The distance between the 95, diaphragm 10 and the bearing surface 16 of the valve may be adjusted by means of a screw 17, which is mounted on the diaphragm f 10 and is accessible fromthe exterior, and which is guarded against gas escape by means Y created through pipes 7 and 8 in the space 6 of a cap. The branch current-of the control regulator valve flows via the throttling point comprising a restricted opening 12 into the chamber 3 and fromther'e into the discharge pipiehl.

e operation is as follows: The control` regulator is loaded in such manner by means of the loading spring 13 that the pressure and the load 14,`and is thus closed. When gas is again removed from the space 3, the

pressure in the same decreases only to such extent until the main valve 2 with the assistance of the ydiaphragm 5 has again been opened by the constant pressure in the space 6. Should the diaphragm 10 be ruptured,

the pressure in the space 6, if the inta e pipe is made sufficiently small, will drop, so that the valve 2 is unable to open. The 4damage will be readily recognizable by -lack of Ipressure in the space 3.

It will be understood that no restrictionis made to the exact form of embodiment shown, and that various modifications may be made without departing from the spirit of the invention.

' What I claim as new and desire to secure i by Letters Patentis:

A A gas pressure regulator comprising aca'sing, an inlet chamber and an outlet chamber provided in the lower part of said casing, a

passage between the two said chambers, a

main reducing valve mounted in said pas sage, a .main diaphragm of relatively large diameter capable of substantial 4displacement mounted in said outlet chamber, said main reducing valve being in operative relation with the said diaphragm,.and mounted to permit a universal for pivoting movement with respect to said diaphragm, in order that the valve may properly control the How of gas through said passage regardless ofv any irregularity in movement of said diaphragm, a regulating chamber in communication with the inlet chamberya 'bleed opening through which the outlet chamber communicates with said regulating chamber,l the differential gas pressure existing in the said regulating' chamber and in said outlet chamber -operating to control the position of said main diaphragm, an auxillary diaphragm made lof meta-l and mounted in said regulating cham ber so as to perform relatively small disy placements with respect to those of the main diaphragm, and an auxiliary valve controlled by said metallic diaphragm operating to control the admission of gas into said regulating chamber o'n one side of said metallic diaphragm.

`In testimony whereof I have aiixed my signature.'

'JOHANN FRIEDRICH v. SCHTZ. 

